Startup Success Kit
The best free tools for startups in 2026
Most "free startup tools" lists are links to paid products with a short trial. This one is different: every calculator, planner and checklist below is genuinely free, runs entirely in your browser, and never asks you to create an account. Built for founders planning a business on a zero budget.
- No account, trial or credit card — every tool opens instantly
- Your numbers stay in your browser; nothing is uploaded
- Formulas and assumptions are shown, not hidden
- Works in USD, INR, GBP, EUR, CAD, AUD, AED and SGD
Idea
Shape the idea and the customer it serves.
Plan
Decide the model, pricing and viability.
Break-Even Calculator
Find how many units or how much revenue covers your costs.
Open free toolRevenue & Profit Calculator
Model revenue, contribution and estimated operating profit.
Open free toolSales Target Calculator
Turn a profit goal into the units and revenue needed to reach it.
Open free toolBusiness Model Planner
Map segments, value, channels, revenue and cost structure.
Open free tool
Budget
Estimate costs and build a real budget.
Startup Cost Calculator
Estimate what it may cost to open your doors, category by category.
Open free toolStartup Budget Planner
Build an itemised budget with one-time and recurring totals.
Open free toolCash-Flow Planner
Project cash in and out month by month and find the tightest month.
Open free toolRunway Calculator
See how many months your cash lasts at your current net burn.
Open free tool
Set up
Work the practical setup steps in order.
Launch
Sequence the first 90 days.
Grow
Revisit numbers as reality replaces estimates.
Scenario Planner
Compare downside, base and upside cases side by side.
Open free toolSensitivity Analysis
See which assumption your profit depends on most.
Open free toolAssumption & Risk Register
Record the assumptions behind your numbers and mark what still needs verification.
Open free toolPlan Readiness Review
See how completely your plan is thought through, area by area.
Open free tool
Why these are genuinely free
Each tool computes from numbers you enter, so there is no server-side processing to meter and no feature locked behind a paywall. You can use them without registering, and if you later create a free account you can save your work to the cloud and pick it up on any device. We never invent benchmarks or statistics: every result shows the formula and the assumptions behind it, so you can check the math yourself.
Prefer a single combined view? Build everything into My Startup Plan or browse the step-by-step startup guides.