Use free calculators, converters, and generators. All tools process data locally in your browser.
Choose a workflow to find tools for your task.
Pick a goal to filter the tools. All tools stay in your browser.
I need to inspect, fix, or convert data fast
Format, decode, and convert data. JSON, XML, YAML, CSV, encoders, and unit converters.
I need to validate and test before shipping
Check code, APIs, regex, and specs. Find issues before your users do.
I need to design a UI that looks pro
Build palettes, shadows, and gradients. Ship a clean interface.
Selected. I need to send money or run a business
Price your work and plan your money. Invoices, pricing, taxes, loans, and unit economics.
I need to get hired — or hire well
Tune your resume, plan interviews, grade job briefs, and run hiring loops.
I need answers fast
Get quick answers. Split bills, plan sleep, pace learning, and count time and money.
I need to generate content, docs, and boilerplate
Create README files, robots.txt, social images, QR codes, invoices, and styled text.
I need to lead my engineering team
Track delivery, plan architecture, and run healthy team rituals.
Estimate development hours, timelines, budgets, and architecture for custom software, SaaS, portals, and migrations.
Audit your landing page against high-impact CRO heuristics to find the leaks.
Compare RSU and ESOP offers. Evaluate vesting schedules, company valuations, and risk-adjusted compensation.
Design structured interview loops with scorecard generation. Get round suggestions and candidate experience scoring.
Paste a job description and get a clarity score, seniority alignment, and red-flag analysis instantly.
Evaluate your product's usability against Nielsen's 10 Heuristics.
Check your site against WCAG 2.1 standards for contrast, navigation, and semantics.
Compute LTV, CAC payback, and the LTV-to-CAC ratio. Get a verdict on whether your unit economics are healthy enough to scale.
Cash, monthly burn, and a phased hiring plan → exact months of runway with a scenario slider. Built for founders watching the bank.
Project recurring revenue 12 months out using signup growth, churn, and ARPU. See your gross vs net new MRR curve.
Calculate net payout after payment-processor fees. Compare Stripe (US/EU), Razorpay (India), and PayPal in one place.
Compute required sample size per arm given baseline conversion, MDE, power, and significance. Avoid underpowered tests.
Model post-money SAFE investments — valuation cap, discount rate, and pro-rata — to see founder dilution and investor ownership.
Model a startup cap table: founder shares, option pool, and priced rounds with dilution waterfall across multiple financing events.
Estimate pre-money valuation using revenue multiples, EBITDA, and team/market heuristics — with a benchmark range against real deal data.
Input monthly retention by cohort to visualize the retention curve, compute lifetime value, and benchmark against SaaS peers.
Split revenue or profit among partners, contributors, or cost centers by percentage, ratio, or fixed amounts — with a visual breakdown.
Estimate monthly API spend across GPT, Claude, Gemini, DeepSeek, Mistral, Llama, and other major model families from input/output token volumes.
Compute monthly EMI, total interest, and a full amortization schedule for any loan — home, car, or personal.
Project mutual-fund SIP growth or find the monthly amount needed to hit a target corpus.
Compare the new vs old income-tax regime for FY 2025-26 with §87A rebate, marginal relief, and 4% cess.
Add or remove Indian GST and compare inclusive and exclusive invoice totals.
Project compound investment growth and inflation-adjusted financial independence scenarios.
Score product ideas by reach, impact, confidence, and effort to prioritize a roadmap.
Rank initiatives by impact, confidence, and ease with a transparent ICE score.
Turn product requirements into clear user stories with acceptance criteria.
Create a structured product requirements document for teams and stakeholders.
Calculate Net Promoter Score from promoter, passive, and detractor responses.
Calculate gross profit and margin from revenue and cost of goods sold.
Find the revenue and unit volume needed to cover fixed and variable costs.
Measure startup burn efficiency from net burn and net new recurring revenue.
Count working days between dates with optional weekends and holiday exclusions.
Project monthly LLM bills, prompt caching discounts, RAG costs, and latency across Claude 3.7, GPT-4o, and DeepSeek.
Model ARPU, MRR, ARR, and customer LTV with generated TypeScript entitlement rules and Stripe configs.
Split any bill fairly. Add tip and tax, weight shares when someone ordered more, then copy the exact amount each person owes.
Compare the net cost of buying a home against renting and investing the difference. Get a clear winner for your stay period.
List your debts, pick snowball or avalanche order, add an extra payment, and see your debt-free month plus interest saved.
Start from a goal in today's money. This tool inflates the target to its future cost, then works back to the monthly SIP you need.
Compute CAGR from start and end values, or XIRR across deposits and withdrawals at any dates. Know your true annual return.
See what today's money will cost later, or what a future amount is worth in today's money, at any inflation rate you set.
Estimate gratuity under the Payment of Gratuity Act with the 15/26 formula. Checks the five-year rule and the statutory cap.
Run a sprint retro in one page. Collect what went well, what to improve, and action items, then export markdown for your wiki.
Stack multiple discounts and see the true final price, savings, and effective percentage off.
Compute tip, total, and per-person share with presets, group splits, and optional rounding.