150 Free Calculators

The Universe of
Useful Numbers

SpaceAtlas brings together finance, legal, health, gaming, cooking, and environmental calculators under one roof. From compound interest to candy temperature staging to glacier melt rates — all free, all instant.

150
Free calculators
10
Categories
0
Sign-ups
About SpaceAtlas

Every Calculation in the Universe, Free

Most calculator sites are organized around one topic. SpaceAtlas was built with a different idea — that useful tools should not be scattered across dozens of niche sites. Finance, legal, health, gaming, sustainability, cooking: if you need to calculate it, it belongs here.

Whether you are a startup founder working out angel round dilution, a home baker perfecting a sourdough hydration ratio, a sustainability analyst modeling glacier melt, or a gamer optimizing idle game offline earnings — SpaceAtlas has a dedicated tool for it.

We built SpaceAtlas because we were tired of either building spreadsheets for one-off calculations or paying for tools that should be free.

Completely Free
All 150 tools available without account, signup, or paywall.
Privacy First
All calculations run in-browser. No data sent to our servers.
10 Categories
Finance, Legal, Health, Gaming, Kitchen, Environment, Shipping, Real Estate, Marketing, HR.
Monthly Updates
New calculators added every month based on user requests.
Who Uses SpaceAtlas
Finance
Founders, Analysts, Investors
Compound interest, 401k, HSA growth, early payoff, EVA, EPS, amortization, economic order quantity.
Legal
Attorneys, Mediators, Individuals
Guardianship costs, anti-SLAPP motions, estate tax, adultery damages, injunction filing fees.
Gaming
Players, Guild Leaders, Sim Builders
Idle game offline earnings, gladiator arena ratings, gem spending value, event timers, game season duration.
Kitchen
Bakers, Home Cooks, Brewers
Bread dough hydration, bone broth timing, pasta dough, deep fry oil management, air fryer conversions.
Env
Analysts, Consultants, Advocates
Glacier melt rates, forest regeneration, CO2 budgets, food-mile carbon, e-bike savings, building retrofit impact.

What Can You Calculate?

Ten categories, 150 tools — from startup dilution to bread dough hydration.

01 — Finance & Investments

Compound Interest, 401k, EVA, EPS

Model monthly compound interest, optimize 401k contributions, calculate economic value added, EPS, financial leverage, early loan payoff, asset turnover, and more. Built for founders, analysts, and financial planners who need precision without a Bloomberg terminal.

28+ tools
02 — Legal Services

Court Fees, Damages & Compensation

Guardianship legal cost estimates, anti-SLAPP motion costs, estate tax projections, adultery damages, injunction filing fees, consumer protection fines, corporate fine multipliers, and false advertising penalties. Tools for legal professionals and individuals navigating the system.

12+ tools
03 — Gaming & Sims

Idle Games, RPGs, Event Planning

Idle game offline earnings, gladiator arena rating, gem spending value optimization, game season duration, event timers, event token earning rates, event score targets. For players who want to optimize their gaming strategy and time investment.

8+ tools
04 — Health & Body

Implantation, Fasting, Calorie Tracking

Implantation window timing, fasting day calories, dog weight loss tracking, dental floss usage, cat calorie needs, baby height prediction, acne treatment cost, beard growth timeline. Tools for health-conscious individuals and professionals.

9+ tools
05 — Kitchen & Baking

Fermentation, Candy, Deep Frying

Perfect bread dough hydration, bone broth cooking time, homemade pasta from scratch, deep fry oil management, candy temperature staging, apple cider vinegar dilution, air fryer conversion charts, butter to oil swaps, batch cooking scheduling. For serious home cooks and bakers.

12+ tools
06 — Environment & Sustainability

Carbon, CO2, Glacier Melt, Forests

Model glacier melt rates, calculate annual CO2 budgets, food-mile carbon footprints, forest regeneration timelines, hemp vs cotton carbon comparison, e-bike vs car savings, building retrofit carbon impact, city tree canopy benefits, cloud seeding costs, acid rain damage estimates. For analysts, consultants, and the genuinely curious.

12+ tools

Browse Calculators

A selection from 150 tools — filter by category.

01
Compound Interest Monthly Calculator
Finance & Wealth
Free →
02
Idle Game Offline Earning Calculator
Gaming & Sims
Free →
03
Glacier Melt Rate Calculator
Environment
Free →
04
Bread Dough Calculator
Kitchen & Baking
Free →
05
Guardianship Legal Cost Estimator
Legal Services
Free →
06
Amortization Schedule Calculator
Finance & Loans
Free →
07
Angel Round Dilution Calculator
Startup Finance
Free →
08
Anti-Dumping Duty Calculator
Trade & Customs
Free →
09
Gladiator Arena Rating Calculator
Gaming
Free →
10
Bone Broth Cooking Time Calculator
Kitchen & Cooking
Free →
11
Annual CO2 Budget Calculator
Environment
Free →
12
Estate Tax Estimator
Legal & Tax
Free →
13
Implantation Calculator
Health & Family
Free →
14
Homemade Pasta Dough Calculator
Kitchen & Cooking
Free →
15
Economic Value Added (EVA) Calculator
Finance & Analysis
Free →
16
Adultery Damages Estimator
Legal Services
Free →
17
Harvest Moon Date Calculator
Farming & Garden
Free →
18
City Tree Canopy Benefit Calculator
Environment
Free →
19
Deep Fry Oil Calculator
Kitchen & Cooking
Free →
20
In-Game Event Timer Calculator
Gaming
Free →
21
Bi-Weekly Mortgage Payment Calculator
Real Estate
Free →
22
CPM Ad Revenue Calculator
Marketing
Free →
23
Aquarium Volume Calculator
Home & Garden
Free →
24
Hiking Time Estimator
Outdoors
Free →
25
Batch Cooking Schedule Calculator
Kitchen & Cooking
Free →
26
Dog Weight Loss Calculator
Health & Pets
Free →
27
Air Freight Weight Calculator
Shipping & Logistics
Free →
28
Emergency Fund Calculator
Personal Finance
Free →
29
Game Season Duration Calculator
Gaming
Free →
30
HEX to RGB Color Converter
Design & Dev
Free →
150
Free calculators
10
Categories
0
Account required
100%
Browser-based

Frequently Asked Questions

Everything you need to know about SpaceAtlas.

Yes. Every calculator on SpaceAtlas is completely free. No account, no premium tier, no hidden features. All 150 tools are available immediately.
Most calculator sites are organized around a single niche. SpaceAtlas was built around the idea that useful tools should be discoverable in one place. Whether you need a compound interest calculator or a candy temperature stage tool, the answer is here — not scattered across ten different websites.
All calculations run entirely in your browser. Nothing is sent to our servers, stored in databases, or shared with any third party. Your inputs and results remain on your device.
Each calculator is researched and built with domain accuracy in mind. Finance tools follow standard industry formulas, gaming tools reflect in-game mechanics, environmental tools use published scientific data, and cooking tools follow tested kitchen ratios.
Yes. New calculators are added monthly. If you encounter a calculation need that is not yet covered, contact us and we will evaluate it for the next development cycle.
Legal tools provide estimates based on general principles and typical fee structures. They are not a substitute for advice from a licensed attorney in your jurisdiction. For actual legal matters, always consult a qualified legal professional.
SpaceAtlas is supported by minimal, contextual advertising. Ads are relevant to the calculator you are using and do not include pop-ups, interstitials, or dark patterns.
We add new calculators every month, prioritized by user requests and domain coverage gaps. Follow our updates to see what is new each month.