How usage fees are calculated – Mackerel Support

*This English translation is for reference purposes only ( original text).

The following will each be calculated as a basis for billing Mackerel usage fees.

Number of hosts
Number of metrics
Number of trace spans
Log ingestion volume *Billing will begin from usage in November 2026 (billed in December 2026)

*A different calculation method may be utilized if you use the service through a special contract or Mackerel partner.

Minimum usage fees
- If you use billable Mackerel features such as posting metrics or external URL monitors, and your usage fees are less than the fee for 1 standard host, your charges will be rounded up to 1,982 JPY (tax excluded; 2,180 JPY tax included), the fee for 1 standard host
  - If you do not use billable features in that month, no charges will be incurred
Metrics
- These are the basis for calculation. A metric contains multiple data points
- 1 metric denotes 60 × 24 × number of days in that month data points
- There is a cost of 10 JPY (tax excluded) per metric
- Examples of posting to data points and numbers of metrics are given below.
  - If there is posting at 1-minute granularity for 1 month from the beginning to the end of the month, it is 1 metric
  - If there is posting at 1-minute granularity for half a month, it is 0.5 metrics. The total, rounded up number is the number of billable metrics
Host metrics
- The cost of 1 standard host includes 200 metrics associated with that host
- The cost of 1 micro host includes 30 metrics associated with that host
- There is a cost of 1,982 JPY (tax excluded; 2,180 JPY tax included) per standard host and ¥600 (tax excluded; 660 JPY tax included) per micro host
- For both standard hosts and micro hosts, metric costs will be incurred for metrics that exceed the limit
- The number of host metrics for a host is determined by the following formula:
  - Number of system metrics + number of custom metrics + number of check monitors
Service metrics and labeled metrics
- Service metrics are treated as metrics not associated with a host, and incur costs
- Labeled metrics are also treated as metrics not associated with a host, and incur costs
External URL monitors
- Converted to standard hosts by the following formula:
  - Rounded up value of (number of external URL monitors used - 20) ÷ 20
  - Value is 0 (no standard host conversion) if number of external URL monitors used is less than 20
- If associated with a service, service metric costs are incurred separately
Anomaly detection for roles
- Every 5 hosts included in a role subject to anomaly detection for roles are counted as 1 standard host. The calculation is as follows:
  - Rounded up value of number of hosts subject to anomaly detection ÷ 5
- If the same host belongs to multiple roles subject to anomaly detection for roles, it is counted separately in each as a host subject to anomaly detection for roles
- Calculations are conducted based on the number of hosts computed according to a monthly average
Traces
- You will be charged for the number of spans posted during the month, from the beginning of the month to the end of the month
- The first 5M spans each month are free of charge. (1M represents 1 million)
- For any amount exceeding the 5M span, a fee of 300 JPY (tax excluded; 330 JPY tax included) will be incurred per 1M span.
  - The smallest unit is 1M span. If it is less than 1M span, it will be rounded up.
- The number of spans subject to billing is determined by the following calculation
  - (Number of spans posted - 5M) ÷ 1M
Logs
- You will be charged for the ingestion volume posted during the month, from the beginning of the month to the end of the month
- A fee of 70 JPY (tax excluded; 77 JPY tax included) will be incurred per 1GB
  - The smallest unit is 1GB. If it is less than 1GB, it will be rounded up

Monitoring rule items and custom dashboards are not billable, but please note the following limitations.

They cannot be created in excess of your plan's upper limit
If you would like to create monitoring rules above the upper limit, please apply for a loosening of the upper limit here

Examples under the Standard plan

The number of metrics associated with a host under the Standard plan is 200 for a standard host and 30 for a micro host.

Examples based on usage patterns are given below (all amounts exclude taxes).

Case 1

Case 1	Metrics used / Number of external URL monitors	Excess metrics handled / Number of external URL monitors	Billed standard hosts	Billed micro hosts	Billed metrics
Standard host A metrics	150	0	1	-	0
Standard host B metrics	250	50	1	-	50
Micro host A metrics	20	0	-	1	0
Micro host B metrics	50	20	-	1	20
Service metrics	10	-	-	-	10
External URL monitors	10	0	0	-	-

You are using 2 standard hosts, 2 micro hosts, 10 service metrics, and 10 external URL monitors. Standard host B has an excess of 50 metrics, and micro host B has an excess of 20 metrics. The charges are calculated as follows.

Standard hosts: 1,982 JPY × 2
Micro hosts: 600 JPY × 2
Metrics: 10 JPY × 80
- 50 excess standard host B + 20 excess micro host B + 10 service metrics = 80

Case 2

Case 2	Metrics used / Number of external URL monitors	Excess metrics handled / Number of external URL monitors	Billed standard hosts	Billed micro hosts	Billed metrics
Standard host A metrics	150	0	1	-	0
Standard host B metrics	100	0	1	-	0
Standard host C metrics	250	50	1	-	50
Micro host A metrics	20	0	-	1	0
Micro host B metrics	20	0	-	1	0
Micro host C metrics	20	0	-	1	0
Micro host D metrics	50	20	-	1	20
Service metrics	100	-	-	-	100
Labeled metrics	200	-	-	-	200
External URL monitors	50	30	2	-	-

You are using 3 standard hosts, 4 micro hosts, 100 service metrics, 200 labeled metrics, and 50 external URL monitors. Standard host C has an excess of 50 metrics, and micro host D has an excess of 20 metrics. The charges are calculated as follows.

Standard hosts: 1,982 JPY × 5
- Actual standard hosts × 3
- (50 external URL monitors used - 20) ÷ 20 = 1.5, round up
Micro hosts: 600 JPY × 4
Metrics: 10 JPY × 370
- 50 excess standard host C + 20 excess micro host D + 100 service metrics + 200 labeled metrics = 370

Case 3

Case 3	Metrics used / Number of external URL monitors	Excess metrics handled / Number of external URL monitors	Billed standard hosts	Billed micro hosts	Billed metrics
External URL monitors	50	30	2	-	-

You are only using external URL monitoring with 50 monitors. The charges are calculated as follows.

Standard hosts: 1,982 JPY × 2
- (50 external URL monitors used - 20) ÷ 20 = 1.5, round up

Case 4

Case 4	Metrics used / Number of external URL monitors	Excess metrics handled / Number of external URL monitors	Billed standard hosts	Billed micro hosts	Billed metrics
Standard host A metrics	150	0	1	-	0
Standard host B metrics	100	0	1	-	0
Standard host C metrics	250	50	1	-	50
Service metrics	100	-	-	-	100
Labeled metrics	200	-	-	-	200
External URL monitors	10	0	0	-	-

You are using 3 standard hosts, 100 service metrics, 200 labeled metrics, and 10 external URL monitors. Standard host C has an excess of 50 metrics. The charges are calculated as follows.

Standard hosts: 1,982 JPY × 3
Metrics: 10 JPY × 350
- 50 excess standard host C + 100 service metrics + 200 labeled metrics = 350

Case 5

Case 5	Metrics used / Number of external URL monitors	Excess metrics handled / Number of external URL monitors	Billed standard hosts	Billed micro hosts	Billed metrics
Micro host A metrics	20	0	-	1	0
Micro host B metrics	20	0	-	1	0
Micro host C metrics	20	0	-	1	0
Micro host D metrics	50	20	-	1	20
Service metrics	100	-	-	-	100
Labeled metrics	200	-	-	-	200
External URL monitors	10	0	0	-	-

You are using 4 micro hosts, 100 service metrics, 200 labeled metrics, and 10 external URL monitors. Micro host D has an excess of 20 metrics. The charges are calculated as follows.

Micro hosts: 600 JPY × 4
Metrics: 10 JPY × 320
- 20 excess micro host D + 100 service metrics + 200 labeled metrics = 320

Case 6

Case 6	Metrics used / Number of external URL monitors	Excess metrics handled / Number of external URL monitors	Billed standard hosts	Billed micro hosts	Billed metrics
Labeled metrics	200	-	-	-	200

You are only using labeled metrics with 200 metrics. The charges are calculated as follows.

Metrics: 10 JPY × 200

Case 7

Case 7	Metrics used / Number of external URL monitors	Excess metrics handled / Number of external URL monitors	Billed standard hosts	Billed micro hosts	Billed metrics
Micro host A metrics	20	0	-	1	0

You are using 1 micro host. The charges are calculated as follows.

Micro host: 600 JPY × 1
Minimum usage fee deficiency: 1,382 JPY
- Minimum usage fee 1,982 JPY - Micro host usage fee 600 JPY = 1,382 JPY
- If you use billable Mackerel features such as posting metrics or external URL monitors, and your usage fees are less than the fee for 1 standard host, your charges will be rounded up to 1,982 JPY (tax excluded; 2,180 JPY tax included), the fee for 1 standard host.

Case 8

Case 8	Metrics used / Number of external URL monitors	Excess metrics handled / Number of external URL monitors	Billed standard hosts	Billed micro hosts	Billed metrics
External URL monitors	10	0	0	-	-

You are using 10 external URL monitors only. The charges are calculated as follows.

Minimum usage fee deficiency: 1,982 JPY
- Minimum usage fee 1,982 JPY - External URL monitors usage fee for up to 20 0 JPY = 1,982 JPY
- The minimum usage fee includes up to 20 external URL monitors.
- If you use billable Mackerel features such as posting metrics or external URL monitors, and your usage fees are less than the fee for 1 standard host, your charges will be rounded up to 1,982 JPY (tax excluded; 2,180 JPY tax included), the fee for 1 standard host.

Case 9

※Billing for log ingestion volume will begin from usage in November 2026 (billed in December 2026), when the feature is officially released.

Case 9	Metrics used / Number of external URL monitors	Excess metrics handled / Number of external URL monitors	Billed standard hosts	Billed micro hosts	Billed metrics	Spans	Log ingestion volume
Micro host A metrics	20	0	-	1	0	-	-
Micro host B metrics	20	0	-	1	0	-	-
Traces	-	-	-	-	-	7.5M	-
Logs	-	-	-	-	-	-	3.8GB

You are using 2 micro hosts, 7.5M trace spans, and 3.8GB log ingestion. The charges are calculated as follows.

Micro hosts: 600 JPY × 2
Trace spans: 300 JPY × 3M spans
- Usage 7.5M spans - Free Tier 5M spans = 2.5M spans → 3M spans, round up
Log ingestion: 70 JPY × 4GB
- Usage 3.8GB → 4GB, round up

Case 10