Embedded EEPROM wear budget calculator

Calculate ideal lifetime with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use ideal lifetime to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Records written per day
100
Wear limit cycles per slot
100000
Perfect wear-leveling slots
64
Physical write cycles per record
2
Ideal lifetime (days)
32000
Ideal lifetime (365-day years)
87.671233

Try another scenario

Records written per day
110.00000000000001
Wear limit cycles per slot
100000
Perfect wear-leveling slots
64
Physical write cycles per record
2
Ideal lifetime (days)
29,090.909091
Ideal lifetime (365-day years)
79.701121
Calculation method

Calculation method

Ideal lifetime (days)

Wear limit×slots/(records per day×physical writes per record).

Ideal lifetime (365-day years)

Ideal days/365; no retention, temperature or uneven-wear correction.

Symbols and units
a
Records written per day
b
Wear limit cycles per slot
c
Perfect wear-leveling slots
d
Physical write cycles per record

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Writes per record, wear limit, leveling slots. Returns Idealized lifetime scenarios. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Records written per day: minimum 1e-12, maximum 1000000000000.0. Wear limit cycles per slot: minimum 1, maximum 1000000000. Perfect wear-leveling slots: minimum 1, maximum 1000000. Physical write cycles per record: minimum 1, maximum 10000.
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