Sajene to Millimeter Converter
Convert sajenes to millimeters with our free online length converter.
Quick Answer
1 Sajene = 2133.6 millimeters
Formula: Sajene × conversion factor = Millimeter
Use the calculator below for instant, accurate conversions.
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All conversion formulas on UnitsConverter.io have been verified against NIST (National Institute of Standards and Technology) guidelines and international SI standards. Our calculations are accurate to 10 decimal places for standard conversions and use arbitrary precision arithmetic for astronomical units.
Sajene to Millimeter Calculator
How to Use the Sajene to Millimeter Calculator:
- Enter the value you want to convert in the 'From' field (Sajene).
- The converted value in Millimeter will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Length category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Sajene to Millimeter: Step-by-Step Guide
Converting Sajene to Millimeter involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Sajene = 2133.6 millimetersExample Calculation:
Convert 10 sajenes: 10 × 2133.6 = 2.1336e+4 millimeters
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
Need to convert to other length units?
View all Length conversions →What is a Sajene and a Millimeter?
The Sajene (Russian: сажень or саже́нь, IPA: [ˈsaʐɨnʲ] or [sɐˈʐɛnʲ]) is an historical Russian unit of length. It was a fundamental unit in the traditional Russian system of measures.
The standard or "state" Sajene (kazyonnaya sazhen) was legally defined as:
- 3 Arshins (another Russian unit)
- 7 English Feet (after Peter the Great's reforms aligned some Russian units with English standards)
- 84 English Inches
This equates to:
- Exactly 2.1336 meters (m)
- Exactly 7 feet (ft)
- Exactly 84 inches (in)
The Sajene was subdivided as follows:
- 1 Sajene = 3 Arshins
- 1 Arshin = 16 Vershoks (meaning 1 Sajene = 48 Vershoks)
The millimeter (symbol: mm) is a unit of length in the metric system equal to one-thousandth of a meter (1/1,000 m) or one-tenth of a centimeter (1/10 cm). It is used for precise measurements in engineering, manufacturing, and everyday applications.
Key relationships:
- 1 millimeter = 0.001 meters (m)
- 1 millimeter = 0.1 centimeters (cm)
- 10 millimeters = 1 centimeter
- 1,000 millimeters = 1 meter
- 1 millimeter ≈ 0.03937 inches (about 1/25th inch)
- 25.4 millimeters = 1 inch (exactly)
The prefix "milli-":
- From Latin "mille" meaning "thousand"
- SI prefix denoting 10⁻³ (one-thousandth)
- Also used in: milligram (mg), milliliter (mL), millisecond (ms)
Visual perspective (how big is it?):
- 1 mm = Thickness of a credit card
- 2 mm = Thickness of a US dime
- 5 mm = Thickness of a pencil lead (mechanical)
- 10 mm = Width of an adult fingernail
- 25.4 mm = Exactly one inch
Convert between length units: mm converter
Note: The Sajene is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Millimeter belongs to the metric (SI) system.
History of the Sajene and Millimeter
The Sajene was used in Russia for centuries, likely originating from an anthropomorphic measurement related to the span of outstretched arms or a person's reach, similar to the fathom in other systems. The name itself may derive from Slavic roots related to reaching or stretching.
While informal variations existed, the unit was standardized over time, notably under Peter the Great (reigned 1682–1725), who aligned the Arshin with 28 English inches, thereby fixing the standard Sajene at exactly 7 English feet (2.1336 m).
The Sajene remained a primary unit for larger measurements in Russia until the metric system was adopted following the Russian Revolution. The metric system became compulsory in the USSR on January 1, 1925, rendering the Sajene and other traditional units obsolete for official use.
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Metric System Origins: The millimeter was defined as a subunit of the meter when the metric system was established in France during the late 18th century (1790s). As measurement standardization progressed, the need for decimal subdivisions of the meter became clear.
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Industrial Revolution: The millimeter became essential during the 19th century Industrial Revolution as:
- Precision machining required fine tolerances
- Interchangeable parts manufacturing emerged
- Engineering drawings needed standard units
- Technical specifications became international
-
Engineering Adoption: By the mid-19th century, engineers and machinists worldwide adopted millimeters as the standard for:
- Machine tool specifications
- Tolerance requirements (±0.1 mm common)
- Technical drawing dimensions
- Quality control measurements
-
Scientific Standardization: The millimeter became standard in scientific research for:
- Laboratory equipment calibration
- Microscopy measurements
- Specimen documentation
- Experimental apparatus dimensions
-
SI Formalization: When the International System of Units (SI) was established in 1960, the millimeter was confirmed as an official subdivision of the meter, forming part of the coherent decimal system.
-
Modern Manufacturing: The 20th century saw millimeters become universal in:
- Automotive engineering specifications
- Electronics manufacturing (PCB design)
- Aerospace tolerances
- Medical device specifications
- Consumer product dimensions
-
Global Standard: Today, millimeters are the primary unit for precision measurements in virtually every country except the United States (which uses both mm and inches). Even in the US, many technical fields have adopted millimeters as standard.
Common Uses and Applications: sajenes vs millimeters
Explore the typical applications for both Sajene (imperial/US) and Millimeter (metric) to understand their common contexts.
Common Uses for sajenes
The Sajene is now obsolete but was historically essential in various fields in Russia:
- Land Surveying: Measuring land plots, distances, and property boundaries.
- Architecture and Construction: Specifying dimensions of buildings, structures, and materials like timber.
- Shipbuilding: Measuring lengths related to ship design and construction.
- Rope Making: Measuring lengths of rope.
- Cartography: Used in mapmaking and geographical measurements.
- Folk Measurement: Appeared in everyday language and descriptions of distance or height.
When to Use millimeters
The millimeter is the standard unit for precise measurements across multiple fields:
Engineering & Machining
Precise measurement requirements for manufacturing, quality control, and technical specifications. Essential for maintaining tolerances in mechanical parts.
Why millimeters in engineering:
- Decimal system (easy calculations)
- International standard (ISO)
- Suitable precision range
- Compatible with CNC machinery
- Standard drawing units
Applications:
- Machine tool specifications
- Part tolerances (±0.05 mm common)
- Technical drawing dimensions
- CAD/CAM software units
- Quality inspection reports
Convert for technical work: mm to inches | mm to cm
Technical Design & Drafting
Standard measurement unit for architectural, mechanical, and technical drawings worldwide.
Drawing Standards:
- ISO standards use millimeters
- Engineering drawings in mm
- Architecture plans (many countries)
- Product design specifications
- Patent drawings (international)
Why mm for drawings:
- Eliminates fractions (unlike inches)
- Scales easily (1:10, 1:100, etc.)
- International communication
- CAD software standard
Electronics & PCB Design
Measuring component sizes, trace widths, and circuit board dimensions in electronic manufacturing.
PCB Design:
- Trace width: 0.25-1 mm
- Component footprints: mm specifications
- Hole diameters: 0.6-1.2 mm
- Board thickness: 1.6 mm standard
- Component spacing: mm grid
Component Specs:
- All modern ICs specified in mm
- Resistor/capacitor sizes (mm codes)
- Connector dimensions
- Display module sizes
Meteorology & Climate
Measuring rainfall amounts with precision, essential for weather forecasting, agriculture, and climate research.
Rain Gauges:
- Standard measurement unit worldwide
- Collected in graduated cylinders (mm scale)
- Automated weather stations use mm
- Historical records in mm
- Climate data standardized
Importance:
- Drought assessment
- Flood prediction
- Agricultural planning
- Water resource management
- Climate change tracking
Use our mm converter for scientific calculations.
Manufacturing & Quality Control
Inspecting product dimensions and ensuring parts meet specifications within required tolerances.
QC Measurements:
- Caliper readings in mm
- Micrometer measurements
- Coordinate measuring machines (CMM)
- Surface profile measurements
- Dimensional inspection reports
Industries:
- Automotive parts
- Aerospace components
- Medical devices
- Consumer electronics
- Precision instruments
Jewelry & Watchmaking
Specifying sizes of gems, watch cases, and jewelry components with precision.
Why jewelers use mm:
- International gem standard
- Precise size communication
- Watch industry standard
- Setting specifications
- Customer communication
Measurements:
- Gemstone dimensions
- Ring widths and thicknesses
- Watch case diameters
- Bracelet link sizes
- Clasp dimensions
Medical Measurements
Documenting precise measurements in diagnostics, surgery planning, and treatment monitoring.
Clinical Uses:
- Imaging measurements (CT, MRI, X-ray)
- Tumor size tracking
- Surgical planning
- Needle specifications
- Medical device dimensions
Why mm in medicine:
- International standard
- Appropriate precision
- Imaging system default
- Research compatibility
- Treatment standardization
Additional Unit Information
About Sajene (sajene)
How long is a Sajene?
The standard Russian Sajene (kazyonnaya sazhen) is exactly:
- 2.1336 meters
- 7 English feet
- 84 English inches
- 3 Arshins
What were the subdivisions of the Sajene?
The Sajene was divided into smaller traditional Russian units:
- 1 Sajene = 3 Arshins
- 1 Arshin = 16 Vershoks
- Therefore, 1 Sajene = 48 Vershoks.
Were there different types of Sajene?
Yes, besides the standard "state" Sajene (7 feet), two other common variations based on body measurements existed historically, though their lengths were less standardized:
- Makhovaya Sajene (Маховая сажень - "swinging" or "sweeping" Sajene): The distance between the fingertips of a person's outstretched arms, roughly equivalent to a fathom (approx. 1.76 meters or 5.77 feet).
- Kosaya Sajene (Косая сажень - "oblique" Sajene): The distance from the toes of one foot to the fingertips of the opposite arm raised diagonally upwards (approx. 2.48 meters or 8.14 feet). This was often used idiomatically to describe someone tall and broad-shouldered.
The kazyonnaya sazhen (7 feet) was the official standard used for legal and technical purposes.
How does the Sajene compare to a Meter or Fathom?
- 1 Sajene = 2.1336 meters
- 1 Meter ≈ 0.4687 Sajenes
- The standard Sajene (2.1336 m / 7 ft) is slightly longer than the standard English fathom (1.8288 m / 6 ft). The Makhovaya Sajene (~1.76 m) was closer in concept and length to the fathom.
Is the Sajene an SI unit?
No, the Sajene is not an SI unit. It is a traditional unit from the historical Russian system of measurement. The SI base unit for length is the meter (m).
Is the Sajene still used today?
No, the Sajene is obsolete and not used in modern measurements in Russia or elsewhere. It was officially replaced by the metric system in 1925. Its significance today is purely historical, found in old texts, documents, literature, and descriptions of historical sites or objects.
About Millimeter (mm)
How many millimeters are in a centimeter?
There are exactly 10 millimeters (mm) in 1 centimeter (cm).
Conversion:
- 1 cm = 10 mm
- To convert cm to mm: multiply by 10
- To convert mm to cm: divide by 10
Examples:
- 5 cm = 50 mm
- 2.5 cm = 25 mm
- 75 mm = 7.5 cm
Memory aid: "Centi-" means 1/100 meter, "milli-" means 1/1,000 meter, so 10 mm = 1 cm.
Use our cm to mm converter for instant conversions.
How many millimeters are in a meter?
There are exactly 1,000 millimeters (mm) in 1 meter (m).
Conversion:
- 1 m = 1,000 mm
- To convert m to mm: multiply by 1,000
- To convert mm to m: divide by 1,000
Examples:
- 0.5 m = 500 mm
- 1.5 m = 1,500 mm
- 2,750 mm = 2.75 m
Remember: "Milli-" means one-thousandth, so it takes 1,000 mm to make 1 meter.
Convert: mm to meters | meters to mm
What does 'milli' mean in millimeter?
The prefix 'milli-' denotes one-thousandth (1/1,000).
Meaning:
- Comes from Latin "mille" meaning "thousand"
- In metric system: milli- = 10⁻³ = 1/1,000
- 1 millimeter = 1/1,000 of a meter = 0.001 m
Other "milli-" units:
- Milligram (mg) = 1/1,000 gram
- Milliliter (mL) = 1/1,000 liter
- Millisecond (ms) = 1/1,000 second
- Milliamp (mA) = 1/1,000 ampere
Pattern: Always divide by 1,000 to get the base unit.
How thick is 1 millimeter?
1 millimeter is very thin - about the thickness of:
Common objects:
- Credit card: 0.76 mm (slightly thinner)
- US dime: 1.35 mm (slightly thicker)
- 10 sheets of paper: ~1 mm
- Paperclip wire: ~1 mm diameter
- Mechanical pencil lead (0.7mm): Slightly thinner
Visual comparison:
- Thinner than a US penny (1.55 mm)
- About 1/25th of an inch (0.04 inches)
- 10 millimeters = 1 cm = width of fingernail
To visualize: Look at the edge of a credit card - that's less than 1 mm.
How many mm in an inch?
1 inch = 25.4 millimeters exactly (by international agreement).
This is a defined conversion (not an approximation):
- 1 inch ≡ 25.4 mm (exact)
- 1 mm = 1/25.4 inch ≈ 0.03937 inches
Common conversions:
- 1 inch = 25.4 mm
- 2 inches = 50.8 mm
- 3 inches = 76.2 mm
- 4 inches = 101.6 mm
- 12 inches (1 foot) = 304.8 mm
Reverse examples:
- 10 mm ≈ 0.394 inches
- 25 mm ≈ 0.984 inches (almost 1 inch)
- 50 mm ≈ 1.969 inches (almost 2 inches)
Memory trick: 25 mm is almost 1 inch (close enough for quick estimates).
Use our inch to mm converter for precise conversions.
What is 10mm in real life?
10 millimeters = 1 centimeter - about the width of an adult fingernail.
Common 10mm objects:
- Fingernail width (adult index finger)
- AA battery diameter: 14 mm (close)
- Small marble: ~10-15 mm diameter
- M10 bolt diameter: 10 mm
- Thick cardboard: ~10 mm
Comparisons:
- Just under 0.4 inches (0.394 inches exactly)
- Thickness of 100 sheets of paper
- About 3/8 inch (slightly larger)
In measurements:
- Camera/phone thickness: Often 7-10 mm
- Watch case thickness: Often 10-12 mm
- Pencil diameter: ~7-8 mm (10mm would be thick)
How do you read a metric ruler?
Metric rulers are divided into centimeters (cm) and millimeters (mm):
Reading steps:
- Large numbers: Centimeters (0, 1, 2, 3...)
- Long lines: Each centimeter mark
- Short lines: Millimeters (10 per cm)
- Count: From zero to your measurement point
Example reading:
- Between 3 and 4 cm, at the 7th small line = 3.7 cm or 37 mm
- At the 15th cm mark = 15 cm or 150 mm
Tips:
- 10 small marks = 1 cm
- Each small mark = 1 mm
- Halfway between cm marks = 5 mm
- Read to nearest 0.5 mm for precision
Reporting:
- Small objects: Use mm (e.g., "15 mm")
- Larger objects: Use cm (e.g., "15.5 cm")
- Both are correct, choose clearer one
What tools measure millimeters?
Many tools measure in millimeters:
Hand Tools:
- Metric ruler: Basic measurement to 1 mm
- Metric tape measure: Construction/carpentry
- Caliper: Precision to 0.01 mm (digital/vernier)
- Micrometer: Very precise, to 0.001 mm
- Depth gauge: Measuring depths and heights
Digital Tools:
- Digital caliper: Easy reading, 0.01 mm precision
- Laser distance meter: Millimeter accuracy
- Height gauge: Vertical measurements
- Coordinate measuring machine (CMM): Industrial precision
Specialized Tools:
- Feeler gauge: Thin strips in mm thicknesses
- Thread gauge: Checking thread pitch (mm)
- Bore gauge: Internal diameter measurement
- Pin gauge: Precision hole measurement
Which to use:
- Ruler: General purpose (±0.5 mm)
- Caliper: Precision work (±0.01 mm)
- Micrometer: Very tight tolerances (±0.001 mm)
Is mm smaller than cm?
Yes, millimeters (mm) are smaller than centimeters (cm).
Relationship:
- 1 cm = 10 mm
- 1 mm = 0.1 cm
- Millimeter is 10 times smaller than centimeter
Scale comparison:
- Largest: meter (m)
- Middle: centimeter (cm) = 1/100 m
- Smallest: millimeter (mm) = 1/1,000 m
Visual:
- Width of fingernail: 1 cm = 10 mm
- Thickness of dime: 1.35 mm (can't easily express in cm)
When to use each:
- Use mm: Small, precise measurements (< 100 mm)
- Use cm: Medium measurements (1-100 cm)
- Use m: Large measurements (> 1 meter)
Example:
- Pencil length: 19 cm or 190 mm (19 cm clearer)
- Wire diameter: 2 mm (not 0.2 cm - awkward)
How much rain is 1mm?
1 millimeter of rain means 1 mm depth of water would cover a flat surface if none drained away.
What it means:
- 1 mm rain = 1 liter per square meter of water
- Light drizzle might produce 1-2 mm/hour
- Barely enough to wet the ground thoroughly
Rain intensity scale:
- Trace-1 mm: Very light drizzle
- 1-2 mm: Light rain
- 2-5 mm: Light to moderate rain
- 5-10 mm: Moderate rain
- 10-20 mm: Heavy rain
- 20-50 mm: Very heavy rain
- >50 mm: Extreme rainfall (per hour)
Practical impact:
- 1 mm: Barely wets surfaces
- 10 mm: Significant watering
- 25 mm: Heavy rain event
- 100 mm: Major storm (in 24 hours)
Measurement:
- Rain gauge collects water
- Depth measured in mm
- Standard worldwide for weather reporting
Conversion Table: Sajene to Millimeter
| Sajene (sajene) | Millimeter (mm) |
|---|---|
| 0.5 | 1,066.8 |
| 1 | 2,133.6 |
| 1.5 | 3,200.4 |
| 2 | 4,267.2 |
| 5 | 10,668 |
| 10 | 21,336 |
| 25 | 53,340 |
| 50 | 106,680 |
| 100 | 213,360 |
| 250 | 533,400 |
| 500 | 1,066,800 |
| 1,000 | 2,133,600 |
People Also Ask
How do I convert Sajene to Millimeter?
To convert Sajene to Millimeter, enter the value in Sajene in the calculator above. The conversion will happen automatically. Use our free online converter for instant and accurate results. You can also visit our length converter page to convert between other units in this category.
Learn more →What is the conversion factor from Sajene to Millimeter?
The conversion factor depends on the specific relationship between Sajene and Millimeter. You can find the exact conversion formula and factor on this page. Our calculator handles all calculations automatically. See the conversion table above for common values.
Can I convert Millimeter back to Sajene?
Yes! You can easily convert Millimeter back to Sajene by using the swap button (⇌) in the calculator above, or by visiting our Millimeter to Sajene converter page. You can also explore other length conversions on our category page.
Learn more →What are common uses for Sajene and Millimeter?
Sajene and Millimeter are both standard units used in length measurements. They are commonly used in various applications including engineering, construction, cooking, and scientific research. Browse our length converter for more conversion options.
For more length conversion questions, visit our FAQ page or explore our conversion guides.
Helpful Conversion Guides
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📚 How to Convert Units
Step-by-step guide to unit conversion with practical examples.
🔢 Conversion Formulas
Essential formulas for length and other conversions.
⚖️ Metric vs Imperial
Understand the differences between measurement systems.
⚠️ Common Mistakes
Learn about frequent errors and how to avoid them.
All Length Conversions
Other Length Units and Conversions
Explore other length units and their conversion options:
- Meter (m) • Sajene to Meter
- Kilometer (km) • Sajene to Kilometer
- Hectometer (hm) • Sajene to Hectometer
- Decimeter (dm) • Sajene to Decimeter
- Centimeter (cm) • Sajene to Centimeter
- Inch (in) • Sajene to Inch
- Foot (ft) • Sajene to Foot
- Yard (yd) • Sajene to Yard
- Mile (mi) • Sajene to Mile
- Nautical Mile (NM) • Sajene to Nautical Mile
Verified Against Authority Standards
All conversion formulas have been verified against international standards and authoritative sources to ensure maximum accuracy and reliability.
National Institute of Standards and Technology — Official US standards for length measurements
Bureau International des Poids et Mesures — International System of Units official documentation
Last verified: February 19, 2026