Mass and Weight · Unit Converter

Convert Grain to Kilogram-force square second/meter

Convert grains to kilogram-force square second/meters instantly. 1 grain = 6.607649e-6 kilogram-force square second/meter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Kilogram-force square second/meter to Grain converter for the reverse conversion.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Dr. Ashok Kumar K, Ph.D.
Mass and Weight category 2 min read Published Last reviewed Updated

Units explained

Avoirdupois

Grain

What is a grain?

The grain (gr) equals 1/7000 of an avoirdupois pound, about 64.8 milligrams.

Origin of the grain

Based on the nominal mass of a single barley grain.

Where it is used

Ammunition and bullet mass, archery, and historical pharmacy.

When and where it was developed

Standardized through the English avoirdupois system and retained in 1959.

Force / Engineering

Kilogram-force square second/meter

What is a kilogram-force square second/meter?

The kilogram-force second-squared per meter (the hyl or TME) is about 9.807 kg.

Origin of the kilogram-force square second/meter

The mass unit of the metric gravitational (technical) system.

Where it is used

Older continental European engineering practice.

When and where it was developed

Used in the metric technical system before SI adoption.

Grain to Kilogram-force square second/meter conversion formula

The relationship between grains and kilogram-force square second/meters:

1 gr = 6.607649e-6 hyl
1 hyl = 151339.7603971672 gr

To convert grains to kilogram-force square second/meters, multiply the value in grains by 6.607649e-6. To reverse, multiply kilogram-force square second/meters by 151339.7603971672.

How to use this converter

Type a value into the calculator. The result in kilogram-force square second/meters updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Kilogram-force square second/meter to Grain converter for the reverse direction.

Step-by-step: convert grains to kilogram-force square second/meters

  1. Write down the value in grains (gr).
  2. Multiply that value by the factor 6.607649e-6.
  3. The product is the equivalent value in kilogram-force square second/meters (hyl).
  4. To reverse, multiply the kilogram-force square second/meter value by 151339.7603971672.

Worked examples

Example 1 — Convert 1 gr to hyl:
1 × 6.607649e-6 = 6.607649e-6 hyl

Example 2 — Convert 100 gr to hyl:
100 × 6.607649e-6 = 0.0006607649 hyl

Real-world example — Macro-scale buildup

A million grains equals exactly one kilogram-force square second/meter — the conversion that bridges microscale features and macroscale objects in microfluidic, biomedical, and semiconductor packaging design.

1000000 gr × 6.607649e-6 = 6.6076488913 hyl

Real-world example — Quarter-meter measurement reference

A 250,000-grain length equals 0.25 kilogram-force square second/meters — useful for comparing supply-chain spec sheets where some lengths are quoted in the smaller unit and some in the larger.

250000 gr × 6.607649e-6 = 1.6519122228 hyl

Real-world example — From microscopic to macroscopic

A million grains equals exactly one kilogram-force square second/meter. This kind of conversion appears in microfluidics, where total channel length is given in kilogram-force square second/meters but feature widths are in grains.

1000000 gr × 6.607649e-6 = 6.6076488913 hyl

Grain to Kilogram-force square second/meter conversion table

Standard reference values for converting grains to kilogram-force square second/meters:

Grain [gr]Kilogram-force square second/meter [hyl]
0.016.607649e-8
0.16.607649e-7
16.607649e-6
21.32153e-5
31.982295e-5
42.64306e-5
53.303824e-5
106.607649e-5
200.000132153
300.0001982295
400.000264306
500.0003303824
1000.0006607649
5000.0033038244
10000.0066076489

Frequently asked questions

How many kilogram-force square second/meters is 1 grain?
1 grain equals 6.607649e-6 kilogram-force square second/meter.
How do I convert grains to kilogram-force square second/meters?
Multiply the value in grains by 6.607649e-6 to get kilogram-force square second/meters.
How do I convert kilogram-force square second/meters back to grains?
Multiply the value in kilogram-force square second/meters by 151339.7603971672, or use the Kilogram-force square second/meter to Grain converter.
How many kilogram-force square second/meters is 100 grains?
100 grains equals 0.0006607649 kilogram-force square second/meters, because 100 × 6.607649e-6 = 0.0006607649.

Convert Grain to other weight units

Show all Grain conversions
Metric / SI (18 units)
Grain to Attogram (ag) Grain to Femtogram (fg) Grain to Picogram (pg) Grain to Nanogram (ng) Grain to Microgram (µg) Grain to Milligram (mg) Grain to Centigram (cg) Grain to Decigram (dg) Grain to Gram (g) Grain to Dekagram (dag) Grain to Hectogram (hg) Grain to Kilogram (kg) Grain to Quintal (metric) (q) Grain to Metric Ton (t) Grain to Gigagram (Gg) Grain to Teragram (Tg) Grain to Petagram (Pg) Grain to Exagram (Eg)
Avoirdupois (14 units)
Grain to Dram (avoirdupois) (dr) Grain to Ounce (oz) Grain to Pound (lb) Grain to Clove (clove) Grain to Stone (US) (st) Grain to Stone (UK) (st) Grain to Quarter (US) (qr) Grain to Quarter (UK) (qr) Grain to Hundredweight (US) (cwt) Grain to Hundredweight (UK) (cwt) Grain to Wey (wey) Grain to Kilopound (kip) (kip) Grain to Ton (short, US) (sh tn) Grain to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Grain to Point (1/100 carat) (pt) Grain to Carat (metric) (ct) Grain to Scruple (apothecary) (s ap) Grain to Pennyweight (dwt) Grain to Momme (mom) Grain to Mace (mace) Grain to Dram (apothecary/troy) (dr ap) Grain to Troy Ounce (oz t) Grain to Tael (tael) Grain to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Grain to Ratti (ratti) Grain to Masha (masha) Grain to Tola (tola) Grain to Chittack (Chatank) (chittack) Grain to Seer (Ser) (seer) Grain to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Grain to Electron Mass (rest) (me) Grain to MeV/c2 (MeV/c²) Grain to Muon Mass (mµ) Grain to Atomic Mass Unit (u) Grain to Proton Mass (mp) Grain to Neutron Mass (mn) Grain to Deuteron Mass (md) Grain to Carbon-12 Atom Mass (C-12) Grain to Planck Mass (mP)
Astronomical (4 units)
Grain to Lunar Mass (Moon) (M☾) Grain to Earth's Mass (M⊕) Grain to Jupiter Mass (MJ) Grain to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Grain to Lepton (Biblical Roman) (lepton) Grain to Quadrans (Biblical Roman) (quadrans) Grain to Assarion (Biblical Roman) (assarion) Grain to Gerah (Biblical Hebrew) (gerah) Grain to Drachma (Biblical Greek) (drachma) Grain to Denarius (Biblical Roman) (denarius) Grain to Bekan (Biblical Hebrew) (bekah) Grain to Didrachma (Biblical Greek) (didrachma) Grain to Shekel (Biblical Hebrew) (shekel) Grain to Tetradrachma (Biblical Greek) (tetra) Grain to Mina (Biblical Greek) (mina) Grain to Mina (Biblical Hebrew) (mina) Grain to Talent (Biblical Greek) (talent) Grain to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Grain to Poundal (pdl) Grain to Ton (assay) (US) (AT) Grain to Ton (assay) (UK) (AT) Grain to Kilogram-force square second/meter (hyl) Grain to Slug (slug)

Sources & references

Conversion factor (1 gr = 6.607649e-6 hyl) verified against the following authoritative sources:

Results are provided for general reference. Verify critical measurements against an authoritative standard.