Free Archery Calculator

Draw Weight Calculator for Bows

Find the draw weight your bow should be set to for your target game, your draw length, and your arrow build. Includes legal minimum draw weight guidance for deer, elk, and hogs, plus step-by-step instructions for changing draw weight on a compound bow.

๐ŸŽฏ Draw Weight Calculator

Enter your setup details to see the recommended draw weight range plus a legal-minimum check.

Measure at your normal anchor, or estimate wingspan รท 2.5
Recommended Draw Weight Recommended: 45โ€“65 lb
Based on target game, draw length, and arrow mass.
How this is calculated: Recommended DW โ‰ˆ base_for_game ร— (DL / 28) ร— arrow_mass_factor Baseline for deer โ‰ˆ 45 lb, hog โ‰ˆ 50 lb, black bear โ‰ˆ 55 lb, elk โ‰ˆ 60 lb at 28 in draw and a 425-grain arrow.

โš™๏ธ How to Change Draw Weight on a Compound Bow

Changing draw weight is a common tune adjustment โ€” but the procedure must be done safely.

  1. Check your bow's range. Most compound bows allow ~10 lb of adjustment (e.g., 60โ€“70 lb). Do not exceed the marked range stamped on the limb.
  2. Loosen the limb bolts evenly. Turn each limb bolt counter-clockwise ยผ turn at a time, alternating sides. Never back a bolt out more than 4โ€“5 turns or you risk the limb coming loose.
  3. Use a bow press only if required. Some bows allow draw weight adjustment without a press. Others need one โ€” never attempt without the correct tools.
  4. Re-check timing and cam sync. After changing weight, verify both cams hit the wall at the same point.
  5. Re-tune spine. Higher draw weight usually requires a stiffer spine. Re-run the arrow spine calculator after a change of 5 lb or more.
  6. Re-paper-tune and re-sight. Broadhead impact will shift; re-verify at 20, 30, and 40 yards.

Can I increase draw weight past the marked range?

No. Exceeding the limb rating risks catastrophic failure and voids your warranty. If you need more poundage, buy a heavier-limb bow.

โ“ Frequently Asked Questions

What is a legal draw weight for bow hunting?

Most U.S. states require a minimum of 35โ€“45 lb at the shooter's draw length for deer. Elk and large-game states often require 50 lb or more. Always confirm with your state's current wildlife handbook โ€” the table above is a starting reference only.

Is 50 lb draw weight enough for deer?

Yes, 50 lb is legal in nearly all U.S. states and, with a well-tuned arrow above 400 grains delivering 40+ ft-lbs of KE, it is effective on whitetail at ethical distances (typically under 30 yards). Use our kinetic energy calculator to confirm you hit the 40 ft-lb threshold.

Is 60 lb draw weight enough for elk?

60 lb at 28โ€“29 in draw with a 450โ€“500 grain arrow is commonly used on elk, but the Pope and Young Club recommends 65 ft-lbs of KE for elk. Verify your build hits 65+ ft-lbs with our arrow weight to KE calculator.

Can I shoot 70 lb draw weight?

Yes, but only if your form stays clean at full draw. Many hunters find 60โ€“65 lb lets them hold steadier at distance. Higher poundage is not automatically better โ€” consistency matters more.

How much does draw length affect effective draw weight?

Roughly, each inch above 28 in adds ~2โ€“3 lb of stored energy. A 30 in draw length at the same bow setting behaves like a heavier draw weight than a 28 in draw length.

How do I lower draw weight on a compound bow?

Turn the limb bolts counter-clockwise in ยผ-turn increments, alternating sides. Re-check cam timing and re-tune your arrow spine.

๐Ÿงฎ Related Calculators