Gear & Guides

Quick Tools

Single-purpose archery calculators you can run in under a minute — no setup, no saved profile required.

Arrow Speed & Performance Calculator

Estimate fps, kinetic energy and momentum from your bow's rated speed and your real finished-arrow weight.

A stick figure with arms spread to measure wingspan, alongside a bow drawn to full draw length

Draw Length Calculator

Get your draw length and safe arrow-cut length from wingspan, cross-checked against height, for compound or recurve.

Arrow Weight Calculator

Add shaft weight, point weight and a components preset into one estimated total finished arrow weight, in grains or grams.

A single stiffness requirement branching out to several real shaft models, with one highlighted as the ranked best match

Arrow Shaft Finder

Turn your bow's peak weight, cam profile, front weight and cut length into a ranked list of real shaft models and spine sizes.

A recurve bow at full draw beside a shaft flexing around a pound-rated spine scale

Recurve Arrow Spine Calculator

Marked bow weight, draw length, limb type, arrow length and point weight, turned into an effective weight and a starting spine family.

A compound cam beside a carbon shaft cross-section marked with a .300 to .500 spine deflection scale

Carbon Arrow Spine Calculator

Peak weight, arrow length, point weight and cam profile, turned into an effective weight and a starting carbon spine range.

A wooden shaft with a grain texture supported on a pound-rated spine test span, beside a longbow at full draw

Wood Arrow Spine Calculator

Bow weight, draw length, bow style, arrow length and point weight, turned into a pound-rated wood shaft spine range.

Arrow Kinetic Energy Calculator

Finished arrow weight and speed, turned into an instant kinetic energy result in ft-lb.

Arrow Momentum Calculator

Finished arrow weight and speed, turned into an instant arrow momentum result in slug-ft/s.

A target face beside a recurve bow at full draw and a ruler of measurement ticks reading out common bow lengths

Bow Size Calculator

Turn your arm span into a draw length, a recommended recurve length or compound axle-to-axle range, a safe arrow length and a starting draw weight.

A shaft diameter class matched along a bore-size scale to its correct nock and insert system

Nock & Insert Fitment Finder

Pick your shaft or its diameter class and get the nock system and insert/bushing size that actually fits its bore, cross-checked against real component catalogs.

One job, one page, no lab required

Quick Tools is the home for calculators that answer a single question and stop — a lighter-weight companion to the full Simulation Lab, which chains several connected simulators around one saved setup. Open a page here, enter your numbers, get the number back.

The Arrow Speed & Performance Calculator, the Draw Length Calculator and the Arrow Weight Calculator were the first three tools in this category, all built on the same physics and fit standards used across ArcheryEra's other calculators. The Recurve Arrow Spine Calculator, Carbon Arrow Spine Calculator and Wood Arrow Spine Calculator split arrow-spine selection into three material/bow-type-specific starting points, each grounded in its own documented selection convention rather than one repurposed formula. For the deeper physics of how a specific shaft actually flexes, see the Dynamic Spine & Shaft Flex Calculator in the Simulation Lab. The newest addition, the Bow Size Calculator, takes that same arm-span measurement and turns it into a recommended bow size, a safe arrow length and a starting draw weight in one pass. More single-purpose calculators will land here as they ship.