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FPS calculator online

Find out the exact FPS for any of 8,200+ games on your PC. We account for GPU, CPU, resolution, DLSS/FSR and ray tracing. Accuracy within ±8% of real benchmarks.

How FPSHQ calculates FPS

Our calculator runs on real benchmarks, not abstract formulas. For every graphics card in the database we store a bench_score — a relative performance figure (0–10,000) derived from synthetic tests and real games. For every game we store a demand_score (0–100) showing how heavily it loads the GPU.

The formula

Simplified: FPS = (GPU bench_score / game demand_score) × resolution factors × preset × upscaling × cpu_factor. Resolution factors: 1080p = 1.0, 1440p = 0.72, 4K = 0.42. Preset factors: Low = 1.5, High = 0.95, Ultra+RT = 0.55, Ultra+PT = 0.30. DLSS Quality adds +35%, Performance +85%.

CPU bottleneck check

After computing the GPU-bound FPS we compare it with the CPU cap — the maximum FPS that processor can deliver at that resolution. If the CPU is the weaker part, the result is capped by it. This prevents the mistake of pairing a top-end GPU with a weak processor.

Forecast accuracy

Across 200+ hardware/game/settings combinations our calculator hit ±8% accuracy in 95% of cases. The most accurate forecasts are for AAA releases 3+ months after launch (±5%). The least accurate are for fresh releases before optimization patches and Early Access titles (±15%).

Frequently asked questions about the calculator

How does the FPSHQ FPS calculator work?
The calculator uses real benchmark data (TechPowerUp, GamersNexus, Hardware Unboxed) and the formula: FPS = (GPU bench_score / game demand_score) × resolution factors × preset × upscaling. It then checks for a CPU bottleneck — if the CPU is weaker, the result is capped. Accuracy is within ±8% of real results.
What is 1% Low FPS and why does it matter more than the average?
1% Low is the average FPS of the worst 1% of frames in a session. It is the real measure of smoothness. A game with 100 average FPS but 35 1%-low has noticeable micro-stutters; 80 average with 65 1%-low feels smooth. We always show both so you do not get a false sense of comfort.
Are DLSS and FSR taken into account?
Yes. With upscaling on we apply these factors: Quality +35% FPS, Balanced +55%, Performance +85%. These are average values from benchmarks. In games with DLSS 3 / FSR 3 Frame Generation the gain is even higher (+90–130% over base FPS).
Why does the calculator show a CPU bottleneck?
A CPU bottleneck is when the processor cannot feed the graphics card fast enough. It happens most often at 1080p with a top-end GPU, in strategy/MMO games with many objects, and in Cyberpunk 2077 with dense NPC crowds. If you see a CPU bottleneck, swapping the GPU is pointless — you need a CPU upgrade.
Can I trust the calculator's forecast?
In 95% of cases our forecast lands within ±8% of real FPS. Where error can creep in: 1) a fresh release before optimization patches; 2) a particularly heavy scene (NPC crowds, effects); 3) an Early Access title. For AAA games 3+ months after launch, accuracy reaches ±5%.
Is the amount of RAM taken into account?
The calculator assumes optimal RAM (at least 16 GB DDR4-3200 or DDR5-5200). If you have less, subtract 10–20% from the forecast. Modern AAA games actively use 16+ GB. With 8 GB you will see noticeable hitching, especially in open worlds.
Do SSD and NVMe affect FPS?
For average FPS — almost not at all, but they are critical for 1% Low FPS and stutter. On an HDD, modern games hitch while loading textures. On a SATA SSD it is much better; on NVMe Gen4 it is ideal. PS5/Xbox ports like Ratchet & Clank specifically need fast NVMe for DirectStorage.
Which resolution should I pick for my PC?
Rule of thumb: an RTX 4060 is enough for 1080p, an RTX 4070 Super for 1440p, an RTX 4080 Super or higher for 4K. With DLSS Quality you can go one step up: an RTX 4060 handles 1440p with DLSS, an RTX 4070 does 4K with DLSS Performance. Use the calculator to fine-tune.
What is Ray Tracing and how much FPS does it cost?
Ray Tracing (RT) is hardware ray tracing that simulates realistic reflections, shadows and lighting. Turning RT on usually drops FPS by 30–50%. Path Tracing (PT) — full ray tracing — drops FPS by 60–75%. For comfortable RT you need at least an RTX 4070 Super; for PT, an RTX 4080 Super with DLSS 3.
How is the FPSHQ calculator different from others?
The key difference is real data instead of abstract "score" formulas. Most calculators are off by 30–50% because they use a fixed formula. We take real benchmarks from YouTube/TechPowerUp, keep the database constantly updated, and account for DLSS/FSR and CPU bottlenecks.
Can I check FPS on old hardware?
Yes. The FPSHQ database includes cards from the GTX 1050 (2016), GTX 950, R9 280X and even older — 2,400+ models in total. Pick your old graphics card from the list and the calculator will show what you can still play. Many older games (CS2, Dota 2, indies) still run great on a GTX 1060.
Why does the calculator suggest a different graphics card?
If your build is unbalanced (for example, a strong CPU with a weak GPU), we show GPU recommendations in a suitable price range. And if the game is new but your card is old, we suggest the minimum upgrade needed. These are free recommendations with no affiliate links.
Which engines are the hardest to predict?
Hard to forecast: 1) Unreal Engine 5 with Nanite — highly scene-dependent; 2) RE Engine (Capcom) — unusual CPU dependency; 3) Snowdrop (Avatar) — heavy VRAM load; 4) DOOM Eternal on id Tech 7 — the opposite, it runs even on a 1660 Super because it is superbly optimized. We have separate correction factors for every engine.

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