Grain to Ton (metric) Conversion Calculator: Free Online Tool
Convert grains to tons with our free online weight converter.
Grain to Ton (metric) Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Grain).
- The converted value in Ton (metric) will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Weight category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Grain to Ton (metric)
Converting Grain to Ton (metric) involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Grain = 6.47989e-8 tonsExample Calculation:
Convert 5 grains: 5 × 6.47989e-8 = 3.23995e-7 tons
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.
What is a Grain and a Ton (metric)?
The grain (gr) is a unit of mass in the traditional English weight systems (Avoirdupois, Troy, and Apothecaries'). It was originally based on the weight of a single grain of barley. It is defined as exactly 64.79891 milligrams (or 1/7000 of an avoirdupois pound).
The metric ton (or tonne) is a unit of mass equal to 1,000 kilograms (kg). It is part of the International System of Units (SI) although not technically an SI unit itself, it is accepted for use with SI. It is equivalent to approximately 2,204.6 pounds.
Note: The Grain is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Ton (metric) belongs to the imperial/US customary system.
History of the Grain and Ton (metric)
The grain is one of the oldest units of mass, dating back to antiquity, using seeds (like barley or wheat) as weight standards. It formed the legal basis for English weight systems and remains defined in terms of metric units today.
The term "tonne" derives from the "tun", an old English unit of volume for large casks. The metric tonne was defined as 1,000 kilograms to provide a larger metric unit for trade and industry, aligning with the decimal nature of the SI system.
Common Uses for grains and tons
Explore the typical applications for both Grain (imperial/US) and Ton (metric) (imperial/US) to understand their common contexts.
Common Uses for grains
- Ammunition: Measuring the mass of bullets and gunpowder charges.
- Archery: Measuring the mass of arrows and arrowheads.
- Medicine & Pharmacy: Historically used in the apothecaries' system; sometimes still used for measuring dosage of certain older medications (e.g., aspirin).
- Jewelry: Used in the troy system (24 grains = 1 pennyweight).
- Reloading: Handloading ammunition requires precise measurement in grains.
Common Uses for tons
- Transportation: Measuring the mass of vehicles like cars, trucks, and heavy machinery.
- Shipping & Logistics: Quantifying large amounts of bulk cargo in shipping (e.g., coal, grain, ore).
- Agriculture: Expressing crop yields and large-scale agricultural production.
- Heavy Industry: Standard unit for production outputs in steel manufacturing, mining, and construction.
- Waste Management: Used for calculating municipal solid waste volumes and recycling quantities.
Frequently Asked Questions
Questions About Grain (gr)
How many grains are in an ounce (avoirdupois)?
There are 437.5 grains (gr) in 1 avoirdupois ounce (oz).
How many grains are in a pound (avoirdupois)?
There are 7,000 grains (gr) in 1 avoirdupois pound (lb).
How many milligrams are in a grain?
There are exactly 64.79891 milligrams (mg) in 1 grain (gr).
About Ton (metric) (t)
How many kilograms are in a metric ton?
There are exactly 1,000 kilograms (kg) in 1 metric ton (t).
Is a metric ton the same as a US ton?
No. A metric ton (1,000 kg) is slightly heavier than a US ton (also called a short ton, 2,000 lbs or about 907.18 kg).
Why is it sometimes spelled "tonne"?
The spelling "tonne" is often used internationally to distinguish it clearly from the imperial/US tons (short ton and long ton).
Conversion Table: Grain to Ton (metric)
| Grain (gr) | Ton (metric) (t) |
|---|---|
| 1 | 0 |
| 5 | 0 |
| 10 | 0 |
| 25 | 0 |
| 50 | 0 |
| 100 | 0 |
| 500 | 0 |
| 1,000 | 0 |
All Weight Conversions
Other Units from Weight
- Kilogram (kg)
- Gram (g)
- Milligram (mg)
- Pound (lb)
- Ounce (oz)
- Stone (st)
- Ton (US) (ton)
- Ton (UK) (long ton)
- Microgram (µg)
- Carat (ct)
- Slug (sl)
- Troy Ounce (oz t)
- Pennyweight (dwt)
- Dram (dr)
- Quintal (q)
- Atomic Mass Unit (u)
- Pavan (India) (pavan)
- Kati (India) (kati)
- Masha (India) (masha)
- Dina (India) (dina)
- Pras (India) (pras)
- Lota (India) (lota)