Hobbies Calculators

Crafting, photography, gaming, and outdoor hobby calculators. From yarn and sewing yardage to depth of field, epoxy resin, aquarium stocking, darts checkouts, poker odds, and more.

Full original guide (expanded)

Hobbies Calculators

Handy tools for makers, photographers, gamers, aquarists, and outdoor fans. Estimate fabric and yarn, mix epoxy or paint, dial in depth of field, plan aquarium stocking, and crunch game odds. Clear inputs, trustworthy formulas, and instant results—so you can spend more time creating and playing.

Crafting & DIY

Candle Making Calculator

Compute wax, fragrance load, and dye for any vessel size.

Epoxy Resin Calculator

Measure resin & hardener by area, thickness, and mix ratio.

Knitting Gauge Calculator

Convert swatch stitches/rows into accurate project sizing.

Soap Making (Lye) Calculator

Balance oils with lye and water for a target superfat.

Paint Mixing Calculator

Mix custom colors and volumes with exact proportions.

Fabric Calculator for Quilting

Plan blocks, backing, batting, and binding yardage.

Sewing Yardage Calculator

Estimate fabric yardage by width, size, and pattern pieces.

Yarn Calculator

Approximate yarn needed by project size, gauge, and stitch.

Photography

Depth of Field (DoF) Calculator

Get near/far focus, hyperfocal distance, and blur circle.

Aquarium & Pets

Aquarium Stocking Calculator

Plan safe fish counts by tank volume, filtration, and species.

Games & Leisure

Board Game Score Calculator

Tally points, bonuses, and tie-breakers cleanly.

Darts Checkout Calculator

Find optimal finishing routes from any score.

Gacha / Loot Box Probability

Model pull odds, pity systems, and expected cost.

Poker Odds Calculator

Evaluate hand strength, outs, pot odds, and equity.

Outdoors

Hiking Time Calculator

Estimate trip time using Naismith plus terrain adjustments.
Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

Hobbies Calculators

Handy tools for makers, photographers, gamers, aquarists, and outdoor fans. Estimate fabric and yarn, mix epoxy or paint, dial in depth of field, plan aquarium stocking, and crunch game odds. Clear inputs, trustworthy formulas, and instant results—so you can spend more time creating and playing.

Crafting & DIY

Candle Making Calculator

Compute wax, fragrance load, and dye for any vessel size.

Epoxy Resin Calculator

Measure resin & hardener by area, thickness, and mix ratio.

Knitting Gauge Calculator

Convert swatch stitches/rows into accurate project sizing.

Soap Making (Lye) Calculator

Balance oils with lye and water for a target superfat.

Paint Mixing Calculator

Mix custom colors and volumes with exact proportions.

Fabric Calculator for Quilting

Plan blocks, backing, batting, and binding yardage.

Sewing Yardage Calculator

Estimate fabric yardage by width, size, and pattern pieces.

Yarn Calculator

Approximate yarn needed by project size, gauge, and stitch.

Photography

Depth of Field (DoF) Calculator

Get near/far focus, hyperfocal distance, and blur circle.

Aquarium & Pets

Aquarium Stocking Calculator

Plan safe fish counts by tank volume, filtration, and species.

Games & Leisure

Board Game Score Calculator

Tally points, bonuses, and tie-breakers cleanly.

Darts Checkout Calculator

Find optimal finishing routes from any score.

Gacha / Loot Box Probability

Model pull odds, pity systems, and expected cost.

Poker Odds Calculator

Evaluate hand strength, outs, pot odds, and equity.

Outdoors

Hiking Time Calculator

Estimate trip time using Naismith plus terrain adjustments.
Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

Hobbies Calculators

Handy tools for makers, photographers, gamers, aquarists, and outdoor fans. Estimate fabric and yarn, mix epoxy or paint, dial in depth of field, plan aquarium stocking, and crunch game odds. Clear inputs, trustworthy formulas, and instant results—so you can spend more time creating and playing.

Crafting & DIY

Candle Making Calculator

Compute wax, fragrance load, and dye for any vessel size.

Epoxy Resin Calculator

Measure resin & hardener by area, thickness, and mix ratio.

Knitting Gauge Calculator

Convert swatch stitches/rows into accurate project sizing.

Soap Making (Lye) Calculator

Balance oils with lye and water for a target superfat.

Paint Mixing Calculator

Mix custom colors and volumes with exact proportions.

Fabric Calculator for Quilting

Plan blocks, backing, batting, and binding yardage.

Sewing Yardage Calculator

Estimate fabric yardage by width, size, and pattern pieces.

Yarn Calculator

Approximate yarn needed by project size, gauge, and stitch.

Photography

Depth of Field (DoF) Calculator

Get near/far focus, hyperfocal distance, and blur circle.

Aquarium & Pets

Aquarium Stocking Calculator

Plan safe fish counts by tank volume, filtration, and species.

Games & Leisure

Board Game Score Calculator

Tally points, bonuses, and tie-breakers cleanly.

Darts Checkout Calculator

Find optimal finishing routes from any score.

Gacha / Loot Box Probability

Model pull odds, pity systems, and expected cost.

Poker Odds Calculator

Evaluate hand strength, outs, pot odds, and equity.

Outdoors

Hiking Time Calculator

Estimate trip time using Naismith plus terrain adjustments.
Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Variables and units
  • No variables provided in audit spec.
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn
Formulas

(Formulas preserved from original page content, if present.)

Version 0.1.0-draft
Citations

Add authoritative sources relevant to this calculator (standards bodies, manuals, official docs).

Changelog
  • 0.1.0-draft — 2026-01-19: Initial draft (review required).