Subscription time value.

Subscription time ROI calculator measures productivity tools value. 40/month subscription saving 5 hours monthly × 100/hour = 500/month time value vs 40 cost = 460 net monthly. Many productivity subscriptions deliver 5-50x ROI in time savings. Software like ChatGPT, Notion, Calendly transform individual productivity.

Example: 40/month productivity tool saving 5 hours monthly. At 100/hour value, monthly time saved worth 500. Net monthly value 460 (1,150% ROI). Annual: 5,520 net value. Many SaaS tools (Notion 8/month, Calendly 12, ChatGPT 18, Grammarly 12) deliver dramatic productivity gains.

High-ROI productivity subscriptions: (1) Calendly (0-15/month - eliminates booking emails). (2) Notion/Obsidian (0-15/month - notes/knowledge). (3) ChatGPT/Claude (15-20/month - drafting, analysis). (4) Grammarly (12/month - writing efficiency). (5) Loom (0-20/month - video over meetings). (6) RescueTime (8/month - time tracking). (7) Krisp (12/month - call quality). Best subscriptions: save 5+ hours monthly per service. Audit quarterly - cancel low-ROI subs. Many free tiers sufficient (Notion, Calendly, ChatGPT all have free options).

Run it with sensible defaults

Using monthly subscription cost of 40, hours saved monthly of 5, your hourly value of 100, the calculation works out to 5,520.00. Nudge the inputs toward your own situation and the output recalculates instantly. The defaults are meant as a starting point, not a recommendation.

The levers in this calculation

The inputs — Monthly Subscription Cost, Hours Saved Monthly, and Your Hourly Value — do not pull with equal force. Frequency and unit price pull the total in different directions. The biggest surprise for most people is how small recurring amounts compound into large annual figures — that's where this calculation earns its keep.

How the math works

Net annual = (hours saved × hourly value × 12) - (monthly cost × 12). The working is transparent — you can verify every step yourself in the formula section below. No black box, no opaque "proprietary model".

When to revisit

Your time isn't priced once. As your rate changes (promotions, side income, efficiency gains), the threshold shifts. Re-run this after any meaningful earnings change so the "outsource vs do-it-yourself" math stays current.

What this doesn't capture

Hour-for-money math misses the tasks you enjoy and the ones that build skill. The number is an efficient-markets view of your time; real decisions about what to do yourself vs outsource should also weigh what you learn and what you enjoy.