Data Size Estimator

Estimate payload size from a representative sample, then apply a rough RAM multiplier.

Inputs

Record payload only; filesystem overhead excluded.

Record size target1 KiB

Number of records10M

Format

Schema-backed formats need schemas or distribution assumptions.

Assume GZIP

Formatting

RSS multiplier

Record sample

1021 B current record

{
  "id": "evt_000001",
  "createdAt": "2026-06-01T19:42:13Z",
  "source": "import-job",
  "active": true,
  "amountCents": 3499,
  "currency": "USD",
  "tags": [
    "import",
    "estimate",
    "sample"
  ],
  "customer": {
    "id": "cust_9f31",
    "tier": "enterprise",
    "region": "us-east-1"
  },
  "metrics": {
    "attempts": 2,
    "latencyMs": 34.7,
    "sampled": true
  },
  "lineItems": [
    {
      "sku": "sku_basic_001",
      "quantity": 2,
      "unitPriceCents": 1299
    },
    {
      "sku": "sku_extra_004",
      "quantity": 1,
      "unitPriceCents": 901
    }
  ],
  "attribute_0": "value_0000",
  "metric_1": 13.37,
  "flag_2": false,
  "labels_3": [
    "region_3",
    "plan_0",
    "cohort_3"
  ],
  "window_4": {
    "start": "2026-06-05T00:00:00Z",
    "end": "2026-06-05T23:59:59Z",
    "count": 1004
  },
  "events_5": [
    {
      "name": "queued",
      "ok": true,
      "durationMs": 9
    },
    {
      "name": "processed",
      "ok": true,
      "durationMs": 34
    }
  ]
}

Record size

1021 B

1.02 KB decimal

Payload total

9.51 GiB

10.2 GB decimal

Total RSS estimate

28.5 GiB

3x uncompressed payload

Records

10M

10,000,000

RSS scale28.5 GiB

16 GiB32 GiB64 GiB128 GiB256 GiB