Fast, free, focused calculators — from take-home pay to bottlenecks and biology scores. Honest numbers, no fluff, no friction.
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Free UK redundancy pay calculator for 2026/27. Work out your statutory redundancy entitlement from your age, years of service and weekly pay, including the £751 weekly cap and the £30,000 tax-free limit.
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Estimate how much overtime pay you keep after UK Income Tax, National Insurance, pension and student loan deductions.
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Adjust injector flow rate for fuel pressure changes using the square-root pressure correction formula.
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Estimate required fuel pump flow in LPH, GPH, and lb/hr from horsepower, fuel type, BSFC, and safety margin.
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Calculate fuel injector duty cycle from horsepower, injector size, injector count, and BSFC. Check whether your injectors are safe or too small.
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Estimate fuel injector size in lb/hr and cc/min from horsepower, BSFC, injector count, and duty cycle.
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Estimate the take-home impact of pension salary sacrifice, including Income Tax and employee NI savings.
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UK Take Home Pay Calculator 2025/26 — Free
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UK Side-Hustle Tax Calculator 2026/27 — What You
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UK IR35 Calculator 2025/26 — Inside vs. Outside
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UK Dividend Tax Calculator 2026/27 — Take-Home for
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AI Subscription Cost Calculator — How Much Are
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LLM Token-to-Cost Calculator (2026) — GPT-4o, Claude, Gemini
Try our most-used calculators — UK take-home pay, budget planning, and more.
